A method and device for multicast switching

A handover preparation and multicast technology, which is applied in the direction of electrical components, connection management, radio/inductive link selection and arrangement, etc., can solve the problems of network transmission resource impact, achieve the goal of reducing signaling traffic, overcoming occupation, and reducing workload Effect

Inactive Publication Date: 2007-05-16
HUAWEI TECH CO LTD
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Problems solved by technology

[0020] Since the IAGW as the core network node and the wireless access node ERS are often separated by a very long distance, the IAGW is directly used for dual broadcasting, and two channels of data are sent to the UE through SERS and TERS respectively, which will cause a great impact on the transmission resources of the network. certain influence

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  • A method and device for multicast switching
  • A method and device for multicast switching
  • A method and device for multicast switching

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Embodiment Construction

[0046] Since the technical solution of the present invention adopts the switching method based on IP multicast, the application architecture of the multicast switching process adopts the transmission network composed of multicast routers as shown in FIG. 5 . Moreover, it is assumed that there is an interface between SERS and TERS in the application framework of the technical solution, and data can be exchanged. The downlink data between the IAGW and the UE is sent to the SERS where the UE is camped on through a multicast tree identified by a specific multicast address. By copying multicast packets and sending them only to the multicast distribution paths that need to be distributed, the multicast routers that exist at locations where multiple multicast distribution paths exist, that is, where multicast distribution paths diverge, do not transfer the multicast distribution paths The amount of traffic increases more than necessary, making efficient use of network bandwidth.

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Abstract

The disclosed multicast switching method comprises: when UE moves from source BS to target BS, the source BS sends information to target BS to trigger switch preparation process; the information detection device of target BS detects switching request from source BS to send information to the information extraction device, the latter extracts IP address of the registered multicast router to transfer to the register; the latter sends register request to the router; meanwhile, the target BS builds UE loading with service gateway of source BS, allocates resource to UE when receiving registered data duplicate and sends switching command to source BS; finally, the source BS terminates the preparation and triggers to execute switching process.

Description

technical field [0001] The present invention relates to a mobile communication system, in particular to a multicast switching method and equipment in the mobile communication system. Background technique [0002] UMTS is a third-generation mobile communication system that adopts WCDMA air interface technology. It is called a universal mobile communication system, and the UMTS system is usually also called a WCDMA communication system. The UMTS system adopts a structure similar to that of the second generation mobile communication system, including a radio access network (Radio AccessNetwork, RAN) and a core network (Core Network, CN). Among them, the wireless access network is used to handle all wireless-related functions, while the CN handles all voice calls and data connections in the UMTS system, and implements switching and routing functions with external networks. The CN is logically divided into a circuit switched domain (Circuit Switched Domain, CS) and a packet swit...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04W36/08H04W36/28H04W76/04
Inventor 许炳
Owner HUAWEI TECH CO LTD
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